Use a reverse iterator to display the string in reverse
#include <iostream> #include <string> #include <cctype> #include <algorithm> #include <vector> using namespace std; int main() { string strA("This is a test."); string::reverse_iterator ritr; for(ritr = strA.rbegin(); ritr != strA.rend(); ++ritr) cout << *ritr; return 0; }